Implantable ophthalmic lens, a method of manufacturing same and

Details Implantable ophthalmic lens, a method of manufacturing same and Implantable ophthalmic lens, a method of manufacturing same and

1995-11-30

1997-10-07

Jones, Mary Beth

Prosthesis (i.e., artificial body members), parts thereof, or ai

Eye prosthesis

Corneal implant

623 6, 264 11, 264 17, 264 24, 425808, A61F 214

Patent

active

056742835

ABSTRACT:
An implantable ophthalmic lens manufactured at least partly out of soft, elastic and pliable material substantially in the shape of a saucer is described. It includes an outer optical face forming one side of the lens, and an inner optical face forming the other side of the lens. A center portion of the inner optical face of the lens as well as the lens rim each have the shape of meniscus derived from the corresponding meniscus of a liquid precursor prior to solidification, the center portion meniscus and the rim meniscus being connected by an annular ring, all surfaces of the lens except the center portion of the inner optical face and the lens rim being replicas of a solid mold from which it is formed. The inner optical face center portion and the lens rim have the shape of a liquid precursor solidified in contact with an inert fluid. The method of manufacturing an ophthalmic lens involves solidification of a liquid precursor in an at least bipartite mold with a dished base and a tubular top member which is extendable under the surface of a liquid precursor. The annular ring is preferably a conically ground face.

REFERENCES:
patent: 4573998 (1986-03-01), Mazzocco
patent: 4664666 (1987-05-01), Barrett
patent: 4738680 (1988-04-01), Herman
patent: 4846832 (1989-07-01), Wichterle
patent: 4878912 (1989-11-01), Castleman
patent: 4994083 (1991-02-01), Sulc et al.

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